01

Use extends to create a new class with another classe's methods

class Person {
    talk() {
        return 'Talking'
    }
}
class SuperHuman extends Person{
    fly(){
        return 'Flying'
    }
} 
const you = new SuperHuman()

you.talk()

you.fly()

const me = new Person()
me.fly()

The instance you of SuperHuman.prototype has both talk and fly. But there is no me.fly()